3Spectators gaze at El Capitan for a glimpse of climbers Tommy Caldwell and Kevin Jorgeson as seen from the valley floor in Yosemite National Park, California, on Jan. 14, 2015.

4In this Jan. 9, 2015 photo provided by Tom Evans, Kevin Jorgeson climbs on what is known as Pitch 15. This free climb of El Capitan, the largest monolith of granite in the world, has been called the hardest rock climb in the world, Yosemite National Park, California.